Answer to Question #173143 in Discrete Mathematics for Mina

Discrete Mathematics

Question #173143

Suppose that Q(x) is “x+1=2x”, where x is a real number. Find the truth value of the following statement:

a) Q(2) b) ∀𝑄(𝑥) c) ∃𝑄(𝑥)

Expert's answer

a) false

$2+1\neq2\cdot2$

b) false

Example: $Q(2)$ , $2+1\neq2\cdot2$

c) true

Example: $Q(1), 1+1=2\cdot1$

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